{"type":"journal_article","publication_status":"published","volume":136,"file_date_updated":"2026-07-14T06:31:13Z","OA_place":"publisher","language":[{"iso":"eng"}],"OA_type":"hybrid","scopus_import":"1","day":"19","issue":"20","quality_controlled":"1","oa":1,"abstract":[{"text":"We derive an analog of the Lellouch-Lüscher (LL) relation for few-body bosonic systems, linking few-body scattering loss rates to the energies and widths of the corresponding harmonically trapped few-body states. Three-body numerical simulations show that the LL relation applies across a broad range of interaction strengths and energies and allows the determination of scattering rates within a single partial wave. Our Letter establishes a robust theoretical framework for understanding the role of the finite-volume effect in few-body observables in optical lattice and tweezer experiments, enabling precise determination of multibody scattering rates.","lang":"eng"}],"acknowledgement":"This work was supported by the\r\nBaden-Württemberg Stiftung through the Internationale\r\nSpitzenforschung program (BWST, Contract\r\nNo. ISF2017-061) and by the German Research\r\nFoundation (DFG, Deutsche Forschungsgemeinschaft,\r\nContract No. 399903135). The authors acknowledge support\r\nby the state of Baden-Württemberg through bwHPC\r\nand the German Research Foundation (DFG) through\r\nGrant No. INST 40/575-1 FUGG (JUSTUS 2 cluster).\r\nJ. H. D and J. P. D. acknowledge funding by Q-DYNAMO\r\n(EU HORIZON-MSCA-2022- SE-01) within Project\r\nNo. 101131418. J. P. D. also acknowledges partial support\r\nfrom the U.S. National Science Foundation (PHY-\r\n2308791/PHYS-2452751) and the Office of Naval\r\nResearch (ONR) Grant No. N00014-21-1-2594.","fulldoi":"https://doi.org/10.1103/pzlp-7k8d","date_created":"2026-07-13T10:50:49Z","tmp":{"name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","image":"/images/cc_by.png","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","short":"CC BY (4.0)"},"article_number":"203401","PlanS_conform":"1","external_id":{"arxiv":["2511.11906"]},"_id":"22304","month":"05","doi":"10.1103/pzlp-7k8d","publication_identifier":{"eissn":["1079-7114"],"issn":["0031-9007"]},"article_processing_charge":"Yes (in subscription journal)","dataavailabilitystatement":"The data that support the findings of this article are openly available 10.5281/zenodo.\r\n19690988","corr_author":"1","intvolume":"       136","arxiv":1,"year":"2026","title":"Lellouch-Lüscher relation for ultracold few-atom systems under confinement","citation":{"chicago":"Li, Jinglun, Paul S. Julienne, Johannes Hecker Denschlag, and José P. D’Incao. “Lellouch-Lüscher Relation for Ultracold Few-Atom Systems under Confinement.” <i>Physical Review Letters</i>. American Physical Society, 2026. <a href=\"https://doi.org/10.1103/pzlp-7k8d\">https://doi.org/10.1103/pzlp-7k8d</a>.","ama":"Li J, Julienne PS, Denschlag JH, D’Incao JP. Lellouch-Lüscher relation for ultracold few-atom systems under confinement. <i>Physical Review Letters</i>. 2026;136(20). doi:<a href=\"https://doi.org/10.1103/pzlp-7k8d\">10.1103/pzlp-7k8d</a>","ista":"Li J, Julienne PS, Denschlag JH, D’Incao JP. 2026. Lellouch-Lüscher relation for ultracold few-atom systems under confinement. Physical Review Letters. 136(20), 203401.","apa":"Li, J., Julienne, P. S., Denschlag, J. H., &#38; D’Incao, J. P. (2026). Lellouch-Lüscher relation for ultracold few-atom systems under confinement. <i>Physical Review Letters</i>. American Physical Society. <a href=\"https://doi.org/10.1103/pzlp-7k8d\">https://doi.org/10.1103/pzlp-7k8d</a>","ieee":"J. Li, P. S. Julienne, J. H. Denschlag, and J. P. D’Incao, “Lellouch-Lüscher relation for ultracold few-atom systems under confinement,” <i>Physical Review Letters</i>, vol. 136, no. 20. American Physical Society, 2026.","short":"J. Li, P.S. Julienne, J.H. Denschlag, J.P. D’Incao, Physical Review Letters 136 (2026).","mla":"Li, Jinglun, et al. “Lellouch-Lüscher Relation for Ultracold Few-Atom Systems under Confinement.” <i>Physical Review Letters</i>, vol. 136, no. 20, 203401, American Physical Society, 2026, doi:<a href=\"https://doi.org/10.1103/pzlp-7k8d\">10.1103/pzlp-7k8d</a>."},"article_type":"original","publication":"Physical Review Letters","researchdata_availability":"yes","status":"public","date_updated":"2026-07-14T06:33:11Z","author":[{"last_name":"Li","first_name":"Jinglun","full_name":"Li, Jinglun","id":"ff19510a-0d2c-11ef-b018-c338ad2f4325"},{"first_name":"Paul S.","last_name":"Julienne","full_name":"Julienne, Paul S."},{"last_name":"Denschlag","first_name":"Johannes Hecker","full_name":"Denschlag, Johannes Hecker"},{"full_name":"D’Incao, José P.","first_name":"José P.","last_name":"D’Incao"}],"publisher":"American Physical Society","has_accepted_license":"1","date_published":"2026-05-19T00:00:00Z","ddc":["530"],"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","department":[{"_id":"MiLe"}],"supplementarymaterial":"yes","das_tickbox":"1","oa_version":"Published Version","file":[{"checksum":"745836cbb77c479a3344b477bbbd7de9","creator":"dernst","date_updated":"2026-07-14T06:31:13Z","file_name":"2026_PhysicalReviewLetters_Li.pdf","file_size":643101,"relation":"main_file","content_type":"application/pdf","file_id":"22330","date_created":"2026-07-14T06:31:13Z","access_level":"open_access","success":1}]}